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• Seneca II-W 2000 Herbaceous Production Standard Vegetation Tvoe Mean Herbaceous Production (Ib/ac) %of Aff. Area Sagebrush/snowberry' 630 38.0 Mountain Brush' 526 37.3 . Aspen Woodland' 719 7.0 Steep Mountain Brush° 748 13.9 Alkali Sage/West Whtgrs. ° 1,411 3.8 1993 Reclamation Area 1,057 NA 1996 Reclamation Area 946 NA 1998 Reclamation Area 725 NA Herbaceous production performance standard (weighted by percent of affected area) = 643.5 Ib/ac. 90 percent of performance standard = 0.9x643.5 = 579 Ib/ac ° Seneca II-W extended reference area values from data collected in 2000 ° Seneca II-WS extended reference area values from data collected in 1997 • Woody Plant Density The woody plant density standard applicable to these lands as of 2000 is 2000 stems per acre. 1993 reclamation averaged 595 woody plant stems per acre and 1996 reclamation averaged 696 woody plant stems per acre (Figure 3, Tables 3, 6 and 16) . These values are above those typically observed over the long term in reclaimed areas at the nearby Seneca II Mine and are encouraging, though still far below the standard at this point. In the 1993 reclaimed areas, nearly half of the total density was Woods rose and most of the rest was, as is typical, big sagebrush and mountain snowberry. However, serviceberry and bitterbrush each comprised slightly over 5 to 7 percent of the total which is encouraging for the long-term. For the 1996 reclaimed areas, the distribution of density among species contributing to the total of 696 stems/ac was skewed toward mountain snowberry and big sagebrush, but serviceberry, chokecherry, bitterbrush, and Gambel's oak all made contributions of from 4 to 12 percent of the total. In the 1998 reclamation, the total woody plant density of 231 stems/ac was more like what is typically observed in reclamation, but it did include good representation by • chokecherry and Gambel's oak. Thus, although the absolute numbers per acre in the